Cary Audio Design CPA 1 - Manual (Page 11)

CONTROLS AND DISPLAYS
10
5. BALANCED MAIN OUTPUTS
• If your power amplifier is equipped with balanced inputs, it is generally best to use the
balanced outputs on your preamplifier. A balanced signal from preamplifier to power
amplifier will offer the highest possible performance with the best immunity from
common-mode noise, such as radio frequency interference (RFI). The balanced output
signal is made available by way of precision male XLR connectors (requiring female
XLRs on the preamplifier end of the interconnecting cable).
• The pin assignments of these XLR-type male outputs are:
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal - (inverting)
Connector ground lug: chassis ground
Refer to your power amplifier's operating manual to verify that the pin assignments of
its input connectors correspond to the CPA 1. If not, wire the cable so that the
appropriate output pin connects to the equivalent input pin.
6. DC TRIGGER OUTPUT TERMINALS
• Connect a device that needs to be triggered by DC + 12V. (CD player)
7. POWER INPUT (AC IN)
• Connect to an AC power supply using the included power supply cord.
8. IR INPUT JACK
• Use this jack to connect external IR sensors.
9. RS-232 PORT
• The RS-232 port is used in conjunction with an external controller to control the
operation of the CPA 1. (This is for custom installation use. Consult your dealer for
more information.)